// Phase 143 P3: test_pattern4_parse_object
// Minimal test for parse_object loop pattern (same as parse_string/array)

static box Main {
  main(args) {
    local result = me.parse_object_loop()
    print(result)
    return 0
  }

  method parse_object_loop() {
    local s = "{\"key1\":\"val1\",\"key2\":\"val2\"}"
    local p = 1
    local obj = new MapBox()

    // Parse key-value pairs (same structure as parse_string)
    loop(p < s.length()) {
      // Skip whitespace (simplified)

      // Parse key (must be string)
      local ch = s.substring(p, p+1)
      if ch != '"' { return null }

      // Parse value (simplified)
      local key = "key"
      local value = "val"
      obj.set(key, value)

      p = p + 1

      // Check for object end or separator
      local next_ch = s.substring(p, p+1)
      if next_ch == "}" {
        return obj  // Stop: object complete
      }

      if next_ch == "," {
        p = p + 1
        continue  // Separator: continue to next key-value pair
      }

      return null  // Error
    }

    return null
  }
}